How can I privately sell a car that still has a loan on it?

Oh, dude, it's like super easy. You just need to find a buyer willing to pay off the loan directly to the lender. Once the loan is paid off, the lender will release the lien on the car's title, and then you can transfer ownership to the buyer. Just make sure to double-check all the paperwork and maybe grab a snack while you're at it.